Humidifier heaterbase



FIG. 1 is a top, front and side perspective view of an embodiment of a humidifier heaterbase embodying our new design.

FIG. 2 is a bottom, rear and right side perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a right side view thereof.

FIG. 6 is a left side view thereof.

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

Broken lines are used to illustrate features of the humidifier heaterbase which form no part of the claimed design. The dot dot dash lines represent boundaries of the claimed design. 

CLAIM The ornamental design for a humidifier heaterbase, as shown and described. 